Which statement is associated with electron theory?

Which statement is associated with electron theory?

• A. Electron theory
• B. Ground
• C. Diode
• D. Field (magnetic field)

Answer: (A)

The central idea being tested is that electricity is explained by electrons moving as the charge carriers. Electron theory holds that electrons are the carriers of electric charge and that current results from their motion in a conductor. In metals, electrons drift from the negative side toward the positive side when a potential difference is applied, even though we often describe current in the opposite (conventional) direction. This concept directly ties to what you’d expect from the term itself. The other options point to different things—ground is just a reference voltage, a diode is a device that controls direction of current, and a magnetic field relates to forces and magnetism rather than the fundamental idea of charge transport by electrons.

The central idea being tested is that electricity is explained by electrons moving as the charge carriers. Electron theory holds that electrons are the carriers of electric charge and that current results from their motion in a conductor. In metals, electrons drift from the negative side toward the positive side when a potential difference is applied, even though we often describe current in the opposite (conventional) direction. This concept directly ties to what you’d expect from the term itself. The other options point to different things—ground is just a reference voltage, a diode is a device that controls direction of current, and a magnetic field relates to forces and magnetism rather than the fundamental idea of charge transport by electrons.